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Appendix
Troubleshooting
Problem
Solution
The phone does not
turn on.
The battery is completely
discharged. Recharge it
fully.
“Invalid or missing
SIM card. You can
still make
emergency calls if
your service
provider supports
it” displays.
Check that the SIM card has
been correctly installed.
The bars next to
disappear.
• If you have just turned on
your phone, wait about 2
minutes, until your phone
finds the network and
receives a signal from the
network.
• If you are in a tunnel or in
an elevator, the phone
may not be able to
receive the network signal
properly. Move to an open
place.
• This may appear when
you move between
different service areas. It
is normal.
The phone does not
work properly or
does not work at
all.
Remove the battery from
the phone and insert it back
into the phone. Turn it on
again.
Reset your phone.
Problem
Solution